A laser gun is a type of weapon that uses focused beams of light, known as lasers, to deliver energy to a target. Unlike traditional firearms that use bullets, laser guns emit a concentrated light beam that can cause damage through heat or impact. They are often depicted in science fiction, but research into laser technology for military and industrial applications is ongoing. Laser guns can vary in design and function, with some intended for use in combat and others for non-lethal purposes, such as crowd control. The technology behind laser guns is based on principles of optics and photonics, which involve the manipulation of light. Military technology and science fiction often explore the potential uses and implications of laser weapons.